I took mine out around 15 weeks maybe a little longer, mine aren't healed still and my daughters 2 months old. Your milk does flow thru the holes where they were pierced. It doesn't mess up the feeding the baby will control the flow by the time your milk is all the way in. The only reason I took mine out is because they were so uncomfortable
I took mines out already . One because it was so uncomfy 2nd my dr said I wana make sure I'm healed properly to breast feed . She said it may look healed on the outside but the inside takes a while to get back